One way in which the dynamic unconscious is justified is by taking into account the evolution and development of the psychical apparatus. It could be argued that evolutionary psychology is the right way to approach this issue. We contend however that the focus on survival value leads to the overestimation of a functional approach being and to neglect of a the structural viewpoint. This has consequences for how the unconscious is defined. Whereas in Freudian metapsychology both stances (the structural and the functional) are present, the structural approach is absent in Smith’s view. As a consequence, the unconscious is reduced to one of its functions, i.e., self-deception. Furthermore, from the structural point of view, the relationship between repression (i.e., the mechanism that generates the dynamic unconscious) and self-deception is reduced to a loose analogy.